<oval_definitions xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5" xmlns:oval="http://oval.mitre.org/XMLSchema/oval-common-5" xmlns:oval-def="http://oval.mitre.org/XMLSchema/oval-definitions-5" xmlns:unix-def="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" xmlns:red-def="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" xmlns:ind-def="http://oval.mitre.org/XMLSchema/oval-definitions-5#independent" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://oval.mitre.org/XMLSchema/oval-common-5 oval-common-schema.xsd http://oval.mitre.org/XMLSchema/oval-definitions-5 oval-definitions-schema.xsd http://oval.mitre.org/XMLSchema/oval-definitions-5#unix unix-definitions-schema.xsd http://oval.mitre.org/XMLSchema/oval-definitions-5#linux linux-definitions-schema.xsd">
<generator>
<oval:product_name>Oracle Errata System</oval:product_name>
<oval:product_version>Oracle Linux</oval:product_version>
<oval:schema_version>5.11</oval:schema_version>
<oval:timestamp>2026-09-01T21:19:46</oval:timestamp>
</generator>
<definitions>
<definition id="oval:com.oracle.elsa:def:202638487" version="501" class="patch">
<metadata>
<title>
ELSA-2026-38487:  xorg-x11-server security update (IMPORTANT)
</title>
<affected family="unix">
<platform>Oracle Linux 8</platform>

</affected>
<reference source="elsa" ref_id="ELSA-2026-38487" ref_url="https://linux.oracle.com/errata/ELSA-2026-38487.html"/>
<reference source="CVE" ref_id="CVE-2026-55999" ref_url="https://linux.oracle.com/cve/CVE-2026-55999.html"/>

<description>
[1.20.11-28.3]
- CVE fix for CVE-2026-55999
  Resolves: https://redhat.atlassian.net/browse/RHEL-191504
</description>
<!--
 ~~~~~~~~~~~~~~~~~~~~   advisory details   ~~~~~~~~~~~~~~~~~~~ 
-->
<advisory>
<severity>IMPORTANT</severity>
<rights>Copyright 2026 Oracle, Inc.</rights>
<issued date="2026-09-01"/>
<cve cvss3="7.5/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H" href="https://linux.oracle.com/cve/CVE-2026-55999.html" public="20260708">CVE-2026-55999</cve>

<affected_cpe_list>
<cpe>cpe:/a:oracle:linux:8::appstream</cpe>
<cpe>cpe:/a:oracle:linux:8::codeready_builder</cpe>
</affected_cpe_list>
</advisory>
</metadata>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487001" comment="Oracle Linux 8 is installed"/>
<criteria operator="OR">
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487002" comment="Oracle Linux arch is aarch64"/>
<criteria operator="OR">
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487003" comment="xorg-x11-server-Xdmx is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487004" comment="xorg-x11-server-Xdmx is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487005" comment="xorg-x11-server-Xephyr is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487006" comment="xorg-x11-server-Xephyr is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487007" comment="xorg-x11-server-Xnest is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487008" comment="xorg-x11-server-Xnest is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487009" comment="xorg-x11-server-Xorg is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487010" comment="xorg-x11-server-Xorg is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487011" comment="xorg-x11-server-Xvfb is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487012" comment="xorg-x11-server-Xvfb is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487013" comment="xorg-x11-server-common is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487014" comment="xorg-x11-server-common is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487015" comment="xorg-x11-server-devel is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487016" comment="xorg-x11-server-devel is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487017" comment="xorg-x11-server-source is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487018" comment="xorg-x11-server-source is signed with the Oracle Linux 8 key"/>
</criteria>
</criteria>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487019" comment="Oracle Linux arch is x86_64"/>
<criteria operator="OR">
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487003" comment="xorg-x11-server-Xdmx is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487004" comment="xorg-x11-server-Xdmx is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487005" comment="xorg-x11-server-Xephyr is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487006" comment="xorg-x11-server-Xephyr is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487007" comment="xorg-x11-server-Xnest is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487008" comment="xorg-x11-server-Xnest is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487009" comment="xorg-x11-server-Xorg is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487010" comment="xorg-x11-server-Xorg is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487011" comment="xorg-x11-server-Xvfb is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487012" comment="xorg-x11-server-Xvfb is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487013" comment="xorg-x11-server-common is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487014" comment="xorg-x11-server-common is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487015" comment="xorg-x11-server-devel is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487016" comment="xorg-x11-server-devel is signed with the Oracle Linux 8 key"/>
</criteria>
<criteria operator="AND">
<criterion test_ref="oval:com.oracle.elsa:tst:202638487017" comment="xorg-x11-server-source is earlier than 0:1.20.11-28.el8_10.3"/>
<criterion test_ref="oval:com.oracle.elsa:tst:202638487018" comment="xorg-x11-server-source is signed with the Oracle Linux 8 key"/>
</criteria>
</criteria>
</criteria>
</criteria>
</criteria>

</definition>
</definitions>
<!--
 ~~~~~~~~~~~~~~~~~~~~~   rpminfo tests   ~~~~~~~~~~~~~~~~~~~~~ 
-->
<tests>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487001"  version="501" comment="Oracle Linux 8 is installed" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487001" />
<state state_ref="oval:com.oracle.elsa:ste:202638487002" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487002"  version="501" comment="Oracle Linux arch is aarch64" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487001" />
<state state_ref="oval:com.oracle.elsa:ste:202638487003" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487003"  version="501" comment="xorg-x11-server-Xdmx is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487002" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487004"  version="501" comment="xorg-x11-server-Xdmx is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487002" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487005"  version="501" comment="xorg-x11-server-Xephyr is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487003" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487006"  version="501" comment="xorg-x11-server-Xephyr is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487003" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487007"  version="501" comment="xorg-x11-server-Xnest is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487004" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487008"  version="501" comment="xorg-x11-server-Xnest is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487004" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487009"  version="501" comment="xorg-x11-server-Xorg is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487005" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487010"  version="501" comment="xorg-x11-server-Xorg is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487005" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487011"  version="501" comment="xorg-x11-server-Xvfb is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487006" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487012"  version="501" comment="xorg-x11-server-Xvfb is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487006" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487013"  version="501" comment="xorg-x11-server-common is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487007" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487014"  version="501" comment="xorg-x11-server-common is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487007" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487015"  version="501" comment="xorg-x11-server-devel is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487008" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487016"  version="501" comment="xorg-x11-server-devel is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487008" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487017"  version="501" comment="xorg-x11-server-source is earlier than 0:1.20.11-28.el8_10.3" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487009" />
<state state_ref="oval:com.oracle.elsa:ste:202638487004" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487018"  version="501" comment="xorg-x11-server-source is signed with the Oracle Linux 8 key" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487009" />
<state state_ref="oval:com.oracle.elsa:ste:202638487001" />
</rpminfo_test>
<rpminfo_test id="oval:com.oracle.elsa:tst:202638487019"  version="501" comment="Oracle Linux arch is x86_64" check="at least one" xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux">
<object object_ref="oval:com.oracle.elsa:obj:202638487001" />
<state state_ref="oval:com.oracle.elsa:ste:202638487005" />
</rpminfo_test>

</tests>
<!--
 ~~~~~~~~~~~~~~~~~~~~   rpminfo objects   ~~~~~~~~~~~~~~~~~~~~ 
-->
<objects>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487005" version="501">
<name>xorg-x11-server-Xorg</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487009" version="501">
<name>xorg-x11-server-source</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487001" version="501">
<name>oraclelinux-release</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487003" version="501">
<name>xorg-x11-server-Xephyr</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487008" version="501">
<name>xorg-x11-server-devel</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487004" version="501">
<name>xorg-x11-server-Xnest</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487007" version="501">
<name>xorg-x11-server-common</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487006" version="501">
<name>xorg-x11-server-Xvfb</name>
</rpminfo_object>
<rpminfo_object xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:obj:202638487002" version="501">
<name>xorg-x11-server-Xdmx</name>
</rpminfo_object>
</objects>
<states>
<!--
 ~~~~~~~~~~~~~~~~~~~~   rpminfo states   ~~~~~~~~~~~~~~~~~~~~~ 
-->
<rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:ste:202638487001" version="501">
<signature_keyid operation="equals">82562ea9ad986da3</signature_keyid>
</rpminfo_state>
<rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:ste:202638487002" version="501">
<version operation="pattern match">^8</version>
</rpminfo_state>
<rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:ste:202638487003" version="501">
<arch operation="pattern match">aarch64</arch>
</rpminfo_state>
<rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:ste:202638487004" version="501">
<evr datatype="evr_string" operation="less than">0:1.20.11-28.el8_10.3</evr>
</rpminfo_state>
<rpminfo_state xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#linux" id="oval:com.oracle.elsa:ste:202638487005" version="501">
<arch operation="pattern match">x86_64</arch>
</rpminfo_state>

</states>
</oval_definitions>
